The AmigaOne is the official solution from the company that currently owns the rights to the Amiga name.
The Pegasus is the solution from another company that is trying to get into this littly niche market.
The number of users, software and how good is each one, can't still be comparable cause the AmigaOne's, AmigaOS4 is not finished yet. I suggest you wait to not risk spending your money on a less supported/inferior choice.
